cómo se saca el porcentaje​

Answer:

1:3

n=3

Step-by-step explanation:

1 hour = 60 minutes

20:60

20÷20=1

60÷20=3

1:3

Answer:

Step-by-step explanation:

It is assumed 30% is the discount.

Original price is $150.99, discount is 30%, sale price is:

Answer:

8:00

Step-by-step explanation:

Calculate time

It is 5:15 now.

Subtract 15 minutes

5:00

Subtract 9 hours

subtract 5 hours

12:00

Then subtract 4 hours

8:00

The distance between the anchor points of the two guy wires holding radio antenna is 181 feet (to the nearest foot)

The problem will be solved using SOH CAH TOA

let the distance between the 150 ft long guy wire and the radio antenna be x

let the distance between the 180 ft long guy wire and the radio antenna be y

cos 65° = x / 150

x = cos 65° * 150

x = 63.39 ft

The height of the antenna

sin 65° = height of antenna / 150

height of antenna = sin 65 * 150

height of antenna = 135.95

using Pythagoras theorem

(length of guy wire)² = (height of the antenna)² + (anchor distance)²

(anchor distance)² = 180² - 135.95²

anchor distance = √(180² - 135.95²)

anchor distance = 117.97

The anchor points distance apart

= 63.39 + 117.97

= 181 (to the nearest foot)

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Answer:

3 ¹/₃ years

Step-by-step explanation:

Simple Interest Formula

I = Prt

where:

Given:

Substitute the given values into the formula and solve for t:

[tex]\sf \implies 500=3000 \times 0.05 \times t[/tex]

[tex]\sf \implies 500=150t[/tex]

[tex]\sf \implies t=\dfrac{500}{150}[/tex]

[tex]\implies \sf t=3\frac{1}{3}[/tex]

Therefore, the money must be left in the account for 3 ¹/₃ years for the account to earn $500 interest.

The probability that a household in Maryland has an annual income of 100000 or more is 0.2373

Given Data;

Maryland had the greatest mean yearly household income of any state, according to Money magazine (time website). Consider a normal distribution with a mean of 75847 and a standard deviation of 33800 for the annual household income in Maryland.

Population Mean (μ) = 75847

Population Standard Deviation (σ) = 33800

'X' follows a normal distribution with a population mean and population standard deviation.

Here,

X ~ N ( μ = 75847 ,σ = 33800 )

Z =(X - μ)/σ

To get the probability that a household in Maryland has an annual income of 100000 or more.

Now, we have to compute P (X > 100000)

P (X > 100000) = 1 - P( (X-μ)/σ < (100000-75847)/33800 )

                         = 1 - p(z < 0.715 )

                         = 1 - 0.7627

                         = 0.2373

The required probability is 0.2373

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The frequency of data value 1 that is 10 will be 6 as "Dividing each frequency by the total number of data values gives the relative frequency. So multiplying the relative frequency by the total number of data values gives the frequency."

The proportion of outcomes where a specific event occurs to all trials, not in a hypothetical sample space but in a real experiment, is known as the empirical probability, relative frequency, or experimental probability of an event. The relative frequency is calculated by dividing each frequency by the total number of data values. Therefore, the frequency is calculated by multiplying the relative frequency by the total number of data values.

Here,

Value                                           Relative frequency

10                                                  0.15

20                                                 0.30      

30                                                 0.45

40                                                 0.10

data 1 value=10

Dividing each frequency by the total number of data values gives the relative frequency.

So, multiplying the relative frequency by the total number of data values gives the frequency.

40*0.15=6

Since "multiplying the relative frequency by the total number of data values gives the frequency," the frequency of the data value 1 that is 10 will be 6.

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The measures of the angles BCA and ABD are equal because they are both right angles.

The line segment BD is a tangent to the circle with diameter AB. We need to find out the reason why the measure of angle BCA must be equal to the measure of angle ABD. The diagram is attached below.

Since AB is the diameter of the circle, it makes an angle equal to 180 degrees at the center of the circle. So the measure of the angle BCA is half of the angle produced by the diameter.

∠BCA = (1/2)×180° = 90°

Since the line BD is tangent to the circle, it will be perpendicular to the diameter. Hence, the angle formed by the diameter and the tangent must be the right angle.

∠ABD =  90°

Hence, both the angles are equal to each other.

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I think so ya is does you just need to tell your teacher if you don't understand

Step-by-step explanation:

the triangle above is an isosceles triangle,

two sides and angles are equal

AC=AD

triangle ACB=triangle ABD(because it is an isosceles triangle )

Yes, there is causation between the two given variables, as the weight is related at some point with the amount of calories consumed.

For two variables x and y, we say that there is causation when, if we modify one of the variables, the other changes in response.

Correlation just means that the variables are related in some way (maybe both have a causation relationship with the same other variable)

So causation implies correlation.

Correlation does not imply causation.

In this case, we have the example:

x = The number of additional calories consumed

y =  amount of weight gained.

Clearly, we have causation between x and y as larger is the value of x, larger will be the value of x.-

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The required third number will be 12 when numbers are in the A.P.

An arithmetic sequence is defined as an arrangement of numbers that is in a particular order.

The given data as

first number = - 2

fifth number = 26

Assume that the given numbers are in the A.P.

The formula to find the general term of an arithmetic sequence is,

Tₙ = a₁ + (n-1)d  ...(i)

Substitute the value of n = 5 and a₁ = -2 in the above formula

T₅ = a₁ + (5-1)d

26 = -2 + 4d

4d = 28

d = 7

For finding the third term (number):

T₃ = -2 + (3-1)7

T₃ = -2 + (2)7

T₃ = -2 + 14

T₃ = 12

Therefore, the required third number will be 12 when numbers are in the A.P.

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Answer:

59.3 meters/second

Step-by-step explanation:

593 / 10 = 59.3

The linear equation:

-28 = y/7

Can be solved by multiplying both sides by 7, to get y = -196

Here we want to solve the equation:

-28 = y/7

And we want to solve this for the variable y.

To do so, we need to isolate said variable in one side of the equation, now remember that we can multiply both sides of the equation by the same number.

Then we can multiply both sides by 7 so we get:

-28*7 = (y/7)*7

-196 = y

The correct option is the last one.

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Answer:

24

Step-by-step explanation:

Start by finding the unit price. Unit price is the term for finding the price of one unit of an item, often used in word problems. We find this by dividing the cost of an item after a certain amount is sold, by that amount.

[tex]96/8 = \$12[/tex]

Now, we know the unit price is 12. Divide the end value of everything you sold by the unit price, 12.

[tex]288/12 = 24[/tex]

Therefore, you sold 24 candles.

Hope this helps!

Answer:

38%

Step-by-step explanation:

22 ÷ 58 = 0.3793...

Ans × 100 = 37.93%

As a whole number = 38%

Using re-grouping to solve 21 x 43, the four products that would be calculated and then added is: 800 + 40 + 60 + 3.

Given data:

21 x 43

Now let make use of re-group to find the for product

21 x 43

So,

20 +1 = 21

40 + 3 =43

Hence,

(20+1) × (40+3)

Expand

(20 × 40) + (1 × 40) + (20 ×3) + (1 ×3)

800 + 40 + 60 + 3

= 903

Check:

21 x 43 = 903

800 + 40 + 60 + 3 =903

Therefore the correct option is C.

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The probability that the divisor chosen is a perfect square is found to be 1/22 which is m:n.

Given: Randomly, a positive integer divisor of 12! is selected.

Prime factorization of 12! = 2¹⁰ × 3⁵ × 5² × 7¹ × 11

Total divisors of 12! = 11 × 6 × 3 × 2 × 2

The probability that the divisor chosen is a perfect square is given as:

(6 × 3 × 2)/(11 × 6 × 3 × 2 × 2)

= 1/22

=m/n

Therefore, the probability that the divisor chosen is a perfect square is found to be 1/22 which is m:n.

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Answer:

y=2x+9

Step-by-step explanation:

Fill in the equation

5=2(-2)+b

Solve for b

5 = -4+b

9 = b

Put the original equation

y=2x+9

The dimensions of the ticket are width is 11 cm and  length is 18 cm.

The perimeter of a rectangle is defined as the addition of the lengths of the rectangle's four sides.

An airplane ticket has a perimeter of 58 cm and an area of 198 square cm.

Let W is the width of the ticket and L is the length of the ticket

The area of a credentials= L × W

198 = L × W ...(i)

The perimeter of a ticket = 2(L+W)

58 = 2(L+W)

29 = L + W

L = 29 - W ...(ii)

Substitute the value of L = 99 - W in equation (i)

198 = (29 - W) × W

198 = 29W - W²

0 = W² - 29W + 198

[tex]0=\left(W^2-11W\right)+\left(-18W+198\right)[/tex]

[tex]0=W\left(W-11\right)-18\left(W-11\right)[/tex]

[tex]0=\left(W-11\right)\left(W-18\right)[/tex]

W = 18 or 11

Substitute the value of W = 11 in equation (ii)

L = 29 - 11

L = 18

Thus, the dimensions of the ticket are width is 11 cm and length is 18 cm.

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The level can be attained  by light reflections.

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The percent of the sophomores in the class of 28 sophomores and juniors is 42.86%.

According to the question,

We have the following information:

Total number in a class including sophomores and juniors = 28

Number of juniors in the class = 16

Now, we have the number of sophomores in this class:

Total number in the class- Number of juniors in the class

28-16

12

Now, we can easily find the percent of sophomores in the class by following the given steps:

Number of sophomores*100/Number of sophomores and juniors

1200/28

42.86%

Hence, the percent of the sophomores in the class of 28 sophomores and juniors is 42.86%.

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Answer:

Step-by-step explanation:

author link

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12K answers

42.2M people helped

Answer:

1,008 calories

Step-by-step explanation:

504 calories in eight ounces

How many calories are there in one pound

1 pound = 16 ounces

504 calories = 8 ounces

x calories = 1 pound

Recall, 1 pound = 16 ounces

504 calories : 8 ounces = x calories : 16 ounces

504 / 8 = x / 16

Cross Multiply

504 * 16 = 8 * x

8,064 = 8x

Divide both sides by 8

x = 8,064 / 8

= 1,008

x = 1,008 calories

Therefore, there are 1,008 calories in one pound

Answer:

Bracelets: 7 Necklaces: 9

Step-by-step explanation:

b+n=16

6n+24n=258

b=-n+16

6(-n+16)+24n=258

-6n+96+24n=258

18n=162

n=9

6n+24(9)=258

6n+216=258

6n=42

n=7

B stands for bracelets

N stands for necklaces

The measure of the exterior angle of the triangle is 144 degrees.

The exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two remote interior angles of the triangle.

Therefore, the measure of the two remote interior angles of a triangle are x - 10 and 4x + 4. The exterior angle of the triangle measures 3x + 54 .

Let's solve for the exterior angle.

x - 10 + 4x + 4 = 3x + 54

5x - 6 = 3x + 54

5x - 3x = 54 + 6

2x = 60

x = 60 / 2

x = 30

Therefore,

exterior angle = 3x + 54 = 3(30) + 54 = 90 + 54 = 144 degrees

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To cover 10000 steps the time taken will be 115 minutes and he will cover at 9:55 AM.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that at 8 a.m., Sothy goes for a walk and plans to walk `10000` steps. At 8:23 a.m., his phone tells him that he has taken `2000` steps.

The time will be calculated as,

2000 steps ⇒ 23 minutes

1 Step ⇒ 23 / 2000 minutes

10000 steps ⇒ ( 23 x 10000) / 2000 minutes

10000 steps ⇒ 115 minutes

The time of covering 10000 steps will be at 9:55.

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Answer:

67.859 g

Step-by-step explanation:

123.9 g - 56.041 g

= 123.900 g - 56.041 g

= 67.859 g

Answer:

Step-by-step explanation:

67.859

Dimensions of the area enclosed is 800 * 800 and the maximum area = 6,40,000 square yards.

Given:

Liana has 3200 yards of fencing to enclose a rectangular area.

Let l and b be the length and width.

we know that:

perimeter of rectangle = 2(l+b)

2l + 2b = 3200

l+b = 1600

b = 1600 - l

Area of rectangle A = lb

= l*1600-l

= 1600 l - l^2

Apply derivative:

dA/dl = 1600 - 2l

1600 - 2l = 0

1600 = 2l

l = 1600/2

l = 800

l+b = 1600

b = 1600 - 800

= 800

Area = 800*800

= 6,40,000

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(5) All snow geese can eat for 11.5 days before the research and rescue center runs out of supplies.

What is snow geese?

Despite having a reputation for having white feathers, many snow geese are actually blue geese, which are darker, gray-brown birds. These birds were formerly believed to be two distinct species, however it has recently been discovered that they are actually just two color variants of the same bird. The variation in color is controlled by a single gene.

9 snow geese are housed in the research and rescue center.

Each geese consumed 16 ounces of seeds, therefore that's how much.

Therefore, the amount of seeds consumed by 9 snow geese is equal to (16*9) ounces.

144 ounces of seeds were consumed by 9 snow geese.

There are currently 1,656 ounces of seeds.

Thus, the number of days before the center runs out of food is equal to the sum of the ounces of seeds eaten by the nine snow geese divided by the total ounces of seeds.

Days till the food center runs out of supplies = 1656/144

11.5 days are required until the center runs out of food.

Hence, all snow geese can eat for 11.5 days before the research and rescue center runs out of supplies.

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